Operating systems

Type validator is a type checker for unserialized (untrusted) network objects. Type checker syntax aims to be safe and compact. It can be used, for example, with BitTorrent's bencoded messages to validate untrusted messages from the network.

PHPTracker is a PHP library to generate .torrent files, set up a Bittorrent tracker server, and a seed server too. It is capable of creating standard .torrent files from any file on your server, tracking client peers and managing peer announcements, and initially seeding your file with a peer daemon that automatically shuts down once you have enough external seeders.